Here is my newest version of the pretty printer I posted earlier.
Not doing all that fancy stuff of printing looped recursive structures, but if you put one deeper structure inside flat one, works better for me than pprint module. I do not use often object oriented structures though.
Dedicated to the Winston-Horn Lisp book 1981 which taught me about recursion.
""" pretty module version 2011 alpha 0.3
module for printing sequences nicely
pretty.string: make pretty string with given indent_level, step between indents, end character, f (typically str/repr),
character between items and brackets
pretty.printer: printing of the pretty string
TODO: ONLY list, tuple, set and frozenset prettying implemented! Other types are printed with function f.
Must add three parts logic to add dict printing!
"""
def string(data, indent_level = 0, step = 2, end = '\n', f = repr, between = ',', brackets = None) :
""" data = what to print, indent_level = starting indentation, step = step size for indention, end = what to put in end of lines
brackets changes the top level brackets only, same with between"""
startend = {list : '[]', tuple : '()', set: '{}', frozenset: ('frozenset([','])')}
if type(data) in startend :
s, e = brackets or startend[type(data)]
pr = (string(item, indent_level + step, step, end, f) for item in data)
return end + ' ' * indent_level+step*' ' + s + (('%s ' % between) if between else '').join(pr) + e
return f(data) if not brackets else (f(data).join(' ').join(brackets))
def printer(*args,**kwargs):
""" passes arguments to string and prints result"""
print(string(*args, **kwargs))
if __name__ == '__main__':
from pprint import pprint
t = list(map(chr, range(32,60)))
t[10] = [range(5) for _ in range(5)]
print('Regular')
print(t)
pprint('Standard pprint')
pprint(t)
pprint('\n')
printer('Last but not least pretty version!', brackets = ['*'*40]*2, f=str.upper)
printer(t, step = 1)
printer(t, step = 4, indent_level = 20)
printer('\n')
printer(tuple('abcd')+([1,2,3,4],), between=' &', f=str, brackets = '<>', step = 10)
stuff = ['spam', 'eggs', 'lumberjack', 'knights', 'ni']
tup = ('spam', ('eggs', ('lumberjack', ('knights', ('ni', ('dead', ('parrot', ('fresh fruit',))))))))
printer(tup, brackets=('Items(',')'), step=1)
printer(frozenset(stuff))We're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, networking, learning, and sharing knowledge.